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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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39 #if !OS(ANDROID) | 39 #if !OS(ANDROID) |
40 const unsigned cMaxInactiveFontData = 250; | 40 const unsigned cMaxInactiveFontData = 250; |
41 const unsigned cTargetInactiveFontData = 200; | 41 const unsigned cTargetInactiveFontData = 200; |
42 #else | 42 #else |
43 const unsigned cMaxInactiveFontData = 225; | 43 const unsigned cMaxInactiveFontData = 225; |
44 const unsigned cTargetInactiveFontData = 200; | 44 const unsigned cTargetInactiveFontData = 200; |
45 #endif | 45 #endif |
46 | 46 |
47 PassRefPtr<SimpleFontData> FontDataCache::get( | 47 PassRefPtr<SimpleFontData> FontDataCache::get( |
48 const FontPlatformData* platformData, | 48 const FontPlatformData* platformData, |
49 ShouldRetain shouldRetain, | 49 ShouldRetain shouldRetain) { |
50 bool subpixelAscentDescent) { | |
51 if (!platformData) | 50 if (!platformData) |
52 return nullptr; | 51 return nullptr; |
53 | 52 |
54 // TODO: crbug.com/446376 - This should not happen, but we currently | 53 // TODO: crbug.com/446376 - This should not happen, but we currently |
55 // do not have a reproduction for the crash that an empty typeface() | 54 // do not have a reproduction for the crash that an empty typeface() |
56 // causes downstream from here. | 55 // causes downstream from here. |
57 if (!platformData->typeface()) { | 56 if (!platformData->typeface()) { |
58 DLOG(ERROR) | 57 DLOG(ERROR) |
59 << "Empty typeface() in FontPlatformData when accessing FontDataCache."; | 58 << "Empty typeface() in FontPlatformData when accessing FontDataCache."; |
60 return nullptr; | 59 return nullptr; |
61 } | 60 } |
62 | 61 |
63 Cache::iterator result = m_cache.find(platformData); | 62 Cache::iterator result = m_cache.find(platformData); |
64 if (result == m_cache.end()) { | 63 if (result == m_cache.end()) { |
65 std::pair<RefPtr<SimpleFontData>, unsigned> newValue( | 64 std::pair<RefPtr<SimpleFontData>, unsigned> newValue( |
66 SimpleFontData::create(*platformData, nullptr, false, | 65 SimpleFontData::create(*platformData, nullptr), |
67 subpixelAscentDescent), | |
68 shouldRetain == Retain ? 1 : 0); | 66 shouldRetain == Retain ? 1 : 0); |
69 // The new SimpleFontData takes a copy of the incoming FontPlatformData | 67 // The new SimpleFontData takes a copy of the incoming FontPlatformData |
70 // object. The incoming key may be temporary. So, for cache storage, take | 68 // object. The incoming key may be temporary. So, for cache storage, take |
71 // the address of the newly created FontPlatformData that is copied an owned | 69 // the address of the newly created FontPlatformData that is copied an owned |
72 // by SimpleFontData. | 70 // by SimpleFontData. |
73 m_cache.set(&newValue.first->platformData(), newValue); | 71 m_cache.set(&newValue.first->platformData(), newValue); |
74 if (shouldRetain == DoNotRetain) | 72 if (shouldRetain == DoNotRetain) |
75 m_inactiveFontData.insert(newValue.first); | 73 m_inactiveFontData.insert(newValue.first); |
76 return newValue.first.release(); | 74 return newValue.first.release(); |
77 } | 75 } |
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163 bool didWork = fontDataToDelete.size(); | 161 bool didWork = fontDataToDelete.size(); |
164 | 162 |
165 fontDataToDelete.clear(); | 163 fontDataToDelete.clear(); |
166 | 164 |
167 isPurging = false; | 165 isPurging = false; |
168 | 166 |
169 return didWork; | 167 return didWork; |
170 } | 168 } |
171 | 169 |
172 } // namespace blink | 170 } // namespace blink |
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